Harrison has 30 cds in his music collection. If 40% of the cds are country and 30% are pop, how many are other types of music

Well you have to find out how many cd is 40% and 30%

30% = 30x. 3=9

40% = 30x. 4=16

now add 16 and 9

16+9=25 now subtract 25 from 30 and see that you have 5 cd of a different type of music to find that as a % divide 5 by 35 to get. 14 I rounded it to the nearest hundreth now move the decimal over 2 spots to get 14%

There are 9 other CD's of a different genre.